*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.box{
    width: 1200px;
    height: 840px;
    background-color: wheat;
    margin: auto;
    display: flex;
}
.son{
    opacity: 0;
    width: 500px;
    height: 300px;
    background-color: orange;
    margin: auto;
}
h2{
    margin-top: 50px;
    margin-left: 20px;
}
p{
    margin-left: 20px;
}
.f1{
    float: right;
    margin-top: 60px;
    margin-right: 20px;
}
table{
    border-spacing: 0;
    margin-top: 20px;
    margin: auto;
    position: absolute;
    margin-top: 100px;
    margin-left: 280px;
}
th,td{
    text-align: center;
    color: white;
    background-color: red;
    width: 150px;
    height: 50px;
}
td span{
    text-align: center;
}
button{
    width: 60px;
    height: 30px;
    margin-left: 280px;
    margin-top: 30px;
}
.a1{
    margin-left: 20px;
    width: 80px;
}
.d1{
    margin: auto;
    color: blue;
    text-decoration: underline;
}